Fireproof door



Sept. 9 1924.

J. A. RAPPAPORT ET AL FIREPROOF noon 2 S heets-Sheet 1 Filed April 11. 1923 W ATTORNEY Patented Septi 9, 1924.

UNITED STATES JACOB A. EAIPPAPOR'I NEW YOR-K.

FIREIEROOF DOOR.

Application fi1ed April 11, 1923. Seral No. 631,298.

T0 alZ whom z't nmy concern:

Be it known that we, JACOB A. RAPPA- PORT ancl WARREN J. l/VILLIAISIS eitizens of the Unitecl States, resicling, respeetively, in the county of Kings, city ancl State of New Yorl:. and in the county of Qneens, city and State of New York, have inventecl an I1nprovernent in Fireproof D001s, of whiel1 the "ollowng is a specifieatien.

Our present invention relates to fireproof cloors or the like, partieularly sueh ns are made up of hollow steelor ether metal stiles ancl. rails, ancl aims toprovitle artieles of the eharacter designatecl which shall be simple in eonstr i1etion avoicling the use of complicatecl forms ancl parts or tl1is purpose, partieularly complicatecl cornerjoining n1eans; whieh shall be easy to assen1ble; and .which, when assemblecl, shell vielcl a strong, rigicl structure n0t liable te distortion, ancl which shall be s0 construetecl as toprevent the door or the like trom beeoming warpecl er otherwise injurecl by flames or other fi re or other hazarcls.

In the aecompanying speeifieation we shall cleseribe, and in tl1e annexecl clrawing show, an illustrativ e1nlooelirnent of our present invention. 1t is, however, to be clearly understoocl that our invention is not limited t0 tlie illustrative enib0clinient thereof herein sl1own and cleseriberl f0r purposes of illustration only.

Referring t0 t he drawings. wherein we have shown tl1e aforesaicl illustratiw emboclirnent of tl .e present invention:

Fig. 1 is a. seetional perspeetive view of a h0llow door stile made in aceordanee with the principles of the present invention, loe- "foie the same has been assemblecl;

Fig.2 is a seetional perspective view of a hollow door rail made in aeeordance with tlxe principles of the present invention, bet'ore. the ss1ne has been assemblecl;

Fig. 3 is a seetional -perspeetive view of one corner of a door made in aceorclance wth the prineiples of the present invention ancl showing the l101l0w stile ancl rail of Figs. land 2, respeetively assembletl t getlier with a panel in accordance with the prineiples of the present invention;

Fig. 4 is a plan view of the door assemblecl; Fig. 5 is a fragmentary seetional view of the door shown in Fig. 4, the section being taken along line 55 0.Fig. 4; and

Fig. 6 is a ragmentaryzsetional view of the assembled door shown in Fig. 4, the seo tien being taken along the line 66 of Fig. 4.

and more particularly to the clrawing illustrating tl1e Same, 10 indieates"generally a hollow steel or other metal door stile, shown more clearly in Fig. 1 of thedrawing. The stile 10 atthe inner spliteclge 1SPIOVC1GC1 witha plurality of integral co opeiating flanges 12 and 13. A ijaeent at least ne end of tlie stile but preferably ad.- iaeent both thesupper ancl lower encls 0 the stile each fase of the stile, here desig- PATENT OFFICE.

AND WAR-BEN J'. WILLIAMS, OFNEW' YORK, N. Y. ASSIGNOBS T0 nateclby reference diameter 14, is provided with a longitudinally disposed depression 15, It will be notecl that the clpressionl5 is for1necl and disposedin that portion of the face 14 of the stile whieh is aclj acent- 0ne end. of the inner eclge of said faee.

One of the cooperating integral flanges 12 and 13, in this case the flange 12, is.pr0-

vided with a eut-out portion 16 which, as

nore clerl v shown in Fig. 1 of the draw- 1ng 1s positoned acljaentthe innen end of the corresponding clepression 15; The

out-out portion 16 oftheintegral flang 12 provic les, iinnnecliately under the same, an uneutportiori 17 inthe remaining flange 13. At least 0ne end 0 tl1e stile,bnt preferably both the upper ancl lower ende 1 the same is proviclecl with the integral folclable por tions 14 forining extensions of the faees 14, ancl' also with the integral e clge end p0r-.

tien 0r extension 18" forming an extension of tl1e edge 18 01 the stile10.

Trning now to the rails of whieh any suitable number sueh as tw0 or more, here sliown as three (see Fig. 4 0 the drawing) may be employecl, ancl turning more partienlarly to Fig.2 of the drawing where an end portion of one of the.rails"is shown, the

rail, generally clesig1iated by reerence eharaeter 20 is provided at the innen edge 21 of the same with the integral cooperating l0w stile or"other metal rail 20 are providecl with the spaced integral flai1ge portions 25 101 the reception 01 and cooperatien witli the correspondingdepressions 15 01 the hollow stile 10. Forthis purpose the flange portions 25 are so shapecl andprportiored as. to fit -a ecuiadely and tightly into the correspondirigdepressons 15,

flanges 22 and 23. The faces 24 of the l101- 60 Referring n0w 'to the aforesaiol illustrat 1ve embodnnent of the presentinventon,

ne of the integral eooperating flanges 22 and 23, such as the flange 23 is provided with a ent-out portion 26, thus leaving the renaining flange 22 With 2111 nneur porfion 27 immecliately over the ent-out portion 26 of the first-1nentioned flange 23. The nncnt portien 27 of the flange 22 is so arrangecl and proportioneel as to fit tightly ino h e ent-out portion 16 of the flange 12 hnn1ecliately over the nnent portion 17 of he flnnge 13 of the hollow stile 10. The enter eclge 28 of the hollow rail 20 is providecl with an ontwarclly extencling portion 28 preferahly infegral With he l0wver edge 28 ancl forrning an extension thereof.

In assembling the door, the stiles ancl rails are so arrangecl with respect to eaeh 0ther that he flange portions 25 at the end of a rail will fit into the corresponcling depressions 15 at the end of a stile, Wih the uncnt portion 27 of the rail flange fitting into the ent-out portion 17 of the stile flange. The flange portions 25 and the uncnt portion 27 of eaeh rail are now suitably fastenecl in the eorresponding clepressions 15 and ent-out portion 17 of the stile, respeetively. For this pnrpose we may use hrazing or other snitable or convenient 1netal joining proe ess. We prefer, however, te weld the designated parts together b v eleetric welcling, such as eleetric spot Welding. We have found that this process of metal joining yielcls a very streng ancl rigid strnetnre highly desirahle for the intencled purpose. The spots at which the clesignacecl part-s have been eleetrically welded have been indicated b v reference oharacter 30.

The end of the hollow stile 1nay now he closed and the stile more efieetively joinecl (0 the rail by folcling over the extensions 14 of the faces 14 of the stile abont and over che extension 18 of the eclge 18 of the stile and the ontwardly exL-e1iding portion 28 of the edge 28 of the rail. The portions 14 may now be fastenecl together as bv means of a folded look seain 31, more elearl3 shown in Fig. 6 of the clrawing. By the exereise of snitable pressnre, the inner portion of the folclerl look sean1 31 \Till he foreed into ancl form a depression within the extension 18 of the eclge 18 of the stile or in the extension 28 of the eclge 28 of the rail, as the case 1nay he this depression heing inclicatecl h v refernee charaeter 32. The panels, of Whieh two are. here shovvn, have been indieatecl by reference character 40 and are more. clearly illustrat-ed in Figs. 3 4 and 5 of the drawing. Each panel 40 n1a v consist of two layers of steel or other sheet metal, of whioh one, such as the layer 41, may be flat, while the other, clesignatecl hy reference character 42, is hollovvecl out bvbeing proviclecl with a flange portion 43 and the inchned intermediate portion 44, thus providing a sealed air space or chamber 45. The eclges 41 and 42 of the members 41 and 42, respectively, of each panel 40, are now joinecl to the pairs of cooperating flanges 12 and 13 of the stile, and to the cooperating flanges 22 and 23 ofthe rail, as

more clearl shown in Figs. 3 and 5 of the drawving. Fer this purpose we may use any snitable n1etal joining process, such as brazing, hut preferably Welding, such as eleetric welding, particularly eleetrie spot wvelding. The spots at which the panel sheets 41 and 42 have been joinecl to the cooperating fianges of the stile and rail have been inclicatecl h v reference eharacter 46 (see Figs. 3 and 4 of the clrawing).

The door for1ning the aforesaicl illustrative emhodi1nent of our present hwention possesses n1any praetically valnable features of construction and 01 usefulness Whieh may be briefly snnnnarizecl as follows: While yielcling a strong, rigicl constrnetion, admirably aclaptecl to withstand. warping or other injury by flan1es or other fire or other haz-arcls, the door is exceedingly si1nple in construction avoiclin9; the use of eomplicatecl for1ns ancl parts, particularly complicated corner-joining 1neans. The door is exeeeclingly easy to asse1nble, thus efleeting snbstantially econon1ies in time, labor and materials needecl for this purpose. While possessing the superiorities of construction and of usefnlness speoified above, it n1ay he very ee0n0n1ically manufacturecl, thus highly reco1n1nending it to and like users of such devices. lVhat we elann as 0ur inrention is:

1. A 1ireproo1 door comprising a tubular stile hnving a plurality of cooperating langes at the inner pression heing provirlecl in each of the fares al fhe stile adjacenr one end of the inner edge of: eaeh faee nt spaeed clistances fro1n (he flange one of said flanges heing providecl With a cntou portion adjacenr the inner en ls o1 seic. depressions.

2. \i fireproo1 (leer emnprising a tubnlar stile having a plnmlit3; of cooperaL-ing in e;gral flenges at the inner split eclge thereof, a depression heing previrlecl in eaeh of the Paees of the stile acljacent one end of the inner edge of eacn i"aee al spaeecl distances 'ro1n the flang;es one of said flanges being provided with a ent-out port-ion adjacent the inner enrls ofrdepressions.

3. A fireproof door comprsing a tubnlar stile having a lurality of eooperating inegral flanges at the inner split eclge hereof a depression being proviclerl in eaeh of the faces 01" the stile acljacent each end 01" the inner eclge of each faeeat spacecl distanees iron1 the flanges one of sai l flanges heing proviclecl with a ent-out portion adjaeent the inner enrls of sairl depressions.

4. A fireproof door emnprising a tnbular stile having a plurality of -coojperating architecte, builders being -nnt away (0 provicle the other of s1ifl last-mentioned mopemting flanges witla ;z1 outwarclly extenrling porton f0i fitting into said cut-out p0rtion. ancl being faStenecl therein by elect1ic spot welding to the uncut opposecl p0rti0n of the remaining one of the first-mentionecl conperating flanges 10. A fireproof door comprising a tubular rail having a plurality 0i cooperating flanges at the inner eclg:e thereof ancl a plurality of spacecl flanged potions at the enter longituclinal eclges therenf, one of saicl cooperating flanges beinq cut away t0 provicle the rernaining one of Snicl cooperating fianges Witli an outwarclly extencling porti0n.

11. A fireproof door comprising a tnbular rail hwng a plurnlity of coopemting flanges at the inner edge thereof, a plurality 0. spacecl flangecl p0rtions at the outer longituclinal eclges thereoli, 0118 of Siid cooperating flanges bein;r cut away to provicle the remaining one f saicl cooperating flanges with an outwarclly extencling portion, and an outwar llv extencling portion at the lower eclge thereof.

12. A fireproof (l001 c0mprising a tnbular stile having a plurality of cooperating i11- tegml fiangesat the inner split eclge therec f a clepression being proviclecl in each of the fases of the stile acljacent each encl Gf tlne inner edge of each face, one of said flanges' being provided with a ent-out portion ad jacent the inner entls of eachpair of said clepressions, in combination witln. a tuloular rail having a plurality of cooperating flanges at the inner eclge thereof ancl a plnrality of spacecl flange portions at the outer longitudinal eclges thereof, said flange portions fitting into saicl depressions ancl being fastenecl therein one of saicl lastme11tioned cooperating flanges beingcut away to pro vide tle other of saicl last-mentionecl cooperatng flanges with an outwarrlly extencling portion 101 fitting intosaicl out-out portion an.cl being fastenecl therein to the uncut 0pposed portion of the remaining one of the first mentione cooperating flanges together with a metal panel fixedly attached t0 tlipairs of cooperating flanges of saicl stile an(.l rail.

13. A fireproof door comprising a tubulai stile hzwing a plnmlity of eoopemting integral flangbs at the inner split eclge tlwereof, z clepression being provirlecl in each of the faces of the stile acljacent eachencl 0 ii tl1e inner eclge of each hoe. om of saicl flanges being proviclecl with a ent-out portion 1Cljacent the inner entls 0f ea.cl1 pair of saicl (lep1ressions in combination With a tubular rail li2ixing :1 plnralit v of c00perating flanges at the inner eclge thereof anl a plnmlity of spacetl flange p0rtions: at the outer longituclinal eclges therenf Saicl flange p0rtions fitting into sad rlnpressions an l being fastenecl therein, one of saicl last-mentionecl cooperating flanges being cut away to p ro vide the other of saicl last-mentioned coop emting flanges with an outwardly extenclng ing proviclecl with (1 out-out portion aclja cent the inner encls of each pair of said clepressions, in combination with a tubular rail lmving u plurailty of cooperating flanges at the inne1 eclge thereof ancl a pluralitv of spaced flange portions at the outer longi tuclinal e ;lges thereof, saicl flange portions fitting into sai l clepressions ancl bein'g astenecl therein, one of saicl last-mentionecl cooperating flanges being cut .a way to provicle the other of said last-mentoned 000pe1ating flanges with an outwarclly extencling pmti0n f01 fitting nt0 saicl out-out portion an l being fastoned therein to the uncut opposed porti0n of the remaining one of the first-mentioned cooperating fianges, together with a metal panel fixe clly attached by electric welcling to the pairs of coopemting flanges of said stile ancl rail.

15 A fireproof door comprising atubulr stile having a plurality of cooperating in tegral flanges at the inner split edge there of, a depression b eing provided in each of the faces of the Stile adjacenteach end of the n.ner eclge of each face one of saicl flanges cent the inner encls of ea ch pair f s aicl depressions in combination with a tubular rail hnving 21 plurality of cooperating fianges at the inner edp;e tliere0f and a plurality 0r' spacerl flange p0rtions at t l1e Outer longiturlinal eclges thereof, saicl flange portions fitting into saicl clepressions ancl being fastenecl therein ons of saicl last-mentioned .cooperating flanges being cu t away to pro- Vfl the other of said last-mentioned cooperating flanges with an outwarclly extencling p0rtion fnr fitting int0 saicl cut-ont portiogn and being fastened therein 150 the uncut p posed porti0n of the remai 1 1ing one of the first-mention'erl coopemting flanges, together with a metz 1l panel fixedly attached by electri c spot welcling to the pairs of cooperatirig flanges of saicl stille ancl rail.

In testimony, where0f we have signed 0111 names to this specification this 21stplay of March 1923.

JACOB A. RAPPAPORT.

WARREN J, WILLIAMS. 

